Long Term Debt (Details)	12 Months Ended						12 Months Ended				12 Months Ended						12 Months Ended						12 Months Ended							12 Months Ended				12 Months Ended
	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2013 2003 multi-currency uncommitted shelf facility, U.S. dollar denominated 1 [Member] USD ($)		Dec. 31, 2012 2003 multi-currency uncommitted shelf facility, U.S. dollar denominated 1 [Member] USD ($)	Dec. 31, 2013 2003 multi-currency uncommitted shelf facility, U.S. dollar denominated 2 [Member] USD ($)		Dec. 31, 2012 2003 multi-currency uncommitted shelf facility, U.S. dollar denominated 2 [Member] USD ($)	Dec. 31, 2013 2003 multi-currency uncommitted shelf facility, total U.S. dollar-denominated debt [Member] USD ($)	Dec. 31, 2013 2003 multi-currency uncommitted shelf facility, Japanese yen denominated 1 [Member] USD ($)		Dec. 31, 2013 2003 multi-currency uncommitted shelf facility, Japanese yen denominated 1 [Member] JPY (¥)		Dec. 31, 2012 2003 multi-currency uncommitted shelf facility, Japanese yen denominated 1 [Member] USD ($)	Dec. 31, 2012 2003 multi-currency uncommitted shelf facility, Japanese yen denominated 1 [Member] JPY (¥)	Dec. 31, 2013 2003 multi-currency uncommitted shelf facility, Japanese yen denominated 2 [Member] USD ($)		Dec. 31, 2013 2003 multi-currency uncommitted shelf facility, Japanese yen denominated 2 [Member] JPY (¥)		Dec. 31, 2012 2003 multi-currency uncommitted shelf facility, Japanese yen denominated 2 [Member] USD ($)	Dec. 31, 2012 2003 multi-currency uncommitted shelf facility, Japanese yen denominated 2 [Member] JPY (¥)	Dec. 31, 2013 2003 multi-currency uncommitted shelf facility, Japanese yen denominated 3 [Member] USD ($)		Dec. 31, 2013 2003 multi-currency uncommitted shelf facility, Japanese yen denominated 3 [Member] JPY (¥)		Dec. 31, 2012 2003 multi-currency uncommitted shelf facility, Japanese yen denominated 3 [Member] USD ($)	Dec. 31, 2012 2003 multi-currency uncommitted shelf facility, Japanese yen denominated 3 [Member] JPY (¥)	Dec. 31, 2013 2003 multi-currency uncommitted shelf facility, total Japanese yen-denominated debt [Member] USD ($)	Dec. 31, 2013 Revcolving Credit Facility Member [Member] USD ($)	Dec. 31, 2013 2010 committed loan, U.S. dollar denominated [Member] USD ($)		Dec. 31, 2012 2010 committed loan, U.S. dollar denominated [Member] USD ($)	Dec. 31, 2013 Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 3 [Member] USD ($)		Dec. 31, 2013 Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 3 [Member] JPY (¥)		Dec. 31, 2012 Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 3 [Member] USD ($)	Dec. 31, 2012 Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 3 [Member] JPY (¥)
Debt Instrument [Line Items]
Original principal amount - facilities	$ 14,000,000			$ 40,000,000	[1]		$ 20,000,000						¥ 3,100,000,000						¥ 2,300,000,000						¥ 2,200,000,000					$ 35,000,000	$ 30,000,000					¥ 8,000,000,000	[2]
Balance - facilities	14,000,000			17,100,000	[3]	22,900,000	11,400,000	[3]	14,300,000		4,100,000	[3]	400,000,000	[3]	10,200,000	900,000,000	12,300,000	[3]	1,300,000,000	[3]	18,700,000	1,600,000,000	11,800,000	[3]	1,200,000,000	[3]	17,900,000	1,600,000,000		35,000,000	0	[3]	18,000,000	75,800,000	[3]	8,000,000,000	[3]	92,000,000	8,000,000,000
Interest rate - facilities (in hundredths)				6.20%			6.20%				1.70%		1.70%				2.60%		2.60%				3.30%		3.30%									1.70%		1.70%
Repayment terms	Revolving line of credit			Notes due July 2016 with annual principal payments that began in July 2010.			Notes due January 2017 with annual principal payments that began in January 2011.				Notes due April 2014 with annual principal payments that began in April 2008.		Notes due April 2014 with annual principal payments that began in April 2008.				Notes due September 2017 with annual principal payments that began in September 2011.		Notes due September 2017 with annual principal payments that began in September 2011.				Notes due January 2017 with annual principal payments that began in January 2011.		Notes due January 2017 with annual principal payments that began in January 2011.					Revolving line of credit	N/A			Notes due May 2022 with annual principal payments that begin in May 2016.		Notes due May 2022 with annual principal payments that begin in May 2016.
Interest rate description - other borrowings	variable 30 day: 0.5933																													variable 30 day: 0.670%
Interest rate - other borrowings (in hundredths)	59.33%																													67.00%
Amortization per month
Current portion of long-term debt	67,824,000	39,019,000								8,600,000																			10,200,000		49,000,000
Interest expense	3,000,000	5,200,000	4,800,000
Minimum cash compensating balance per loan covenant	65,000,000
Committed amount	50,000,000
Maturities of Long-term Debt [Abstract]
2013	67,824,000
2014	14,592,000
2015	25,419,000
2016	19,705,000
2017	10,827,000
Thereafter	43,309,000
Total	$ 181,676,000

[1] On May 25, 2012, the Company (a) entered into an amendment and restatement of its multi-currency uncommitted shelf facility to extend the termination date to May 25, 2015 and provide for the issuance of up to $150 million in additional senior promissory notes; (b) entered into an amendment and restatement of the Company’s revolving credit facility to extend the termination date to May 9, 2014; and (c) terminated pledges and guarantees of its subsidiaries as security for the multi-currency uncommitted shelf facility, committed loan and revolving credit facility. The committed loan continues to be secured by deeds of trust with respect to the Company’s corporate headquarters and distribution center in Provo, Utah.

[2] On May 31, 2012, the Company issued a series of yen denominated senior promissory notes under the multi-currency uncommitted shelf facility with an aggregate principal amount of 8.0 billion yen.

[3] The current portion of the Company’s long-term debt (i.e. becoming due in the next 12 months) includes $12.4 million of the balance of its Japanese yen-denominated debt under the multi-currency uncommitted shelf facility, $8.6 million of the balance on its U.S. dollar denominated debt under the multi-currency uncommitted shelf facility and $18.0 million of the Company’s committed loan.